Improvement in clevis-attachment for plows



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Letters Patent No. 92,409, dated July 6, 1869.

IMPROVEMENT IN CLEVIS-ATTACHMENT FOR PLOWS.

The Schedule referred to.in these Letters Patent and making part of the same.

. To all whom. it may concern:-

the art to which my ilivention appertains, to'carry it into effect, reference being had to the accompanying drawings, which are made part of this specification.

My invention -consists in a novel construction and combination of parts in a whiflietree-attaclnnent, adapting it, while it allows afree vertical and lateral movement of the whifiietree, to rigidly support the same against turning on its longitudinal axis, thus causing the plow to be lifted to and sustained'in an erect position by the draught of the team .on the whiletrec, without eort or exertion on the p trt of the plowlnan.

In the drawings- Figure 1 represents la perspective View of a preferred form of my invention applied to the beam and whiiiietree, and Fgure 2, a plan. -view of the coupling detached.

vB represents the beam, and

W, the whi'letree. v

Attached to the bottom and top of the beam B, at its front end,is a pair of plates, L L, held by suitable bolts L L', passing vertically through both of them and the beam, and secured by screw-nuts in the usual mani ner.

rlhe outer ends of the plates L L are perforated ver#A tically, for the receptin ofthe pivots 0 of a fiat block, M, which is perforated transversely by a number of holes, N, arranged in 'a vertical series, andv employed to receive, in one or another of them, the couplinglink, according-as it is desired ,to plow at a greater or less depth. l v' The block M may be of greater or less length than the depth ofthe end of the beam, and when ot' greater length, asvshown, the ends'of the plates L L may be bent outward for its reception.

When of less length,.said plates may be let into suitable recesses in the beam, or bent inward snfciently to provide the `required space.

Said block isseeured in place by the riveting of itsl pivots, as shown, by providing their outer ends with screw-nuts or other suitable appliance, or by forming them in the shape of hooks, so as to prevent their withdrawal by any movement the `block might accidentally receive.

Attached' to the block M, by a bolt, H', passingthrough one of the holes N of said block, is a pair of vertical plates, G G, supported at a distance apart, corresponding with its thickness, bya number of washers, K, on a central bolt, I, and attachedat the other end, by a bolt, H', to the loop l) of the whifiletree W.

The plates G G may be of any dimensions, as to length and width, and suliiciently thick to prevent any considerable torsional movement.

The holes for the reception of the bolts H H I are preferably formed, respectively, in their ends, and midway between those points, as shown.

The loop l). is secured on the whifletrce in any suitable manner, and maybe of any suitable form and dimensions toaiiordthe necessary eyes for the recep tion 'of the whifiletree and the bolt H; that for the latter being preferably of the same width as the block M, and with flat sidcs,to assist informing-the desired rigid joint.

,lhe bolt I and washers -K may obviously be dispensed with, if preferred, especially when the plates Gr areA not of great length.

The plates L L and pivoted block M, constituting the clevis proper, may also advantageously be employed separate from the other devices.`

1t will be seen, that by means of the hinges or pivots O and H H', respectively,vertical and horizontal, a free movement, vertically 'and horizontally, of the plow or beam, is allowed, irrespective of the other; but bythe employment ofthe rigid plates G G,-bolted tirmlyagainst the flat sides ofthe block M, forming a part of the hinge 0 at one end, and ot' the loop P,

-through which the pivot. ot' the hinge H passes, at the other, as described, any separate turning on the longitudinal axis of the plow and-whiiletrec is elieet-ually prevented. ,I

The draught of the team tends'to keep the whiietree `in a horizontal position,'so that by 4means of the provision in Athe attachment last described the plow is by this same'po'wer lifted to and sustained in an erect position, thus relieving the plowman of ythis arduous task, and thereby enabling him to much lnore per fectly guide and manage the team.

The device is compact and neat in its appearance, may befreadily applied and removed, as required, and isA adapted to be very rapidly and cheaply manufactnred, owing .to the simplevform of its parts.

I claim as new, and of my invention- `1. 'lhe block M, provided with vertical pivots O O, and a vertical series of' perfbrations, N N, substantially as described, for the purposes set forth.

2. In combination with the clevisL M, constructed substantially as described, the plates-1G G, bolts H H', and whifiletree-loop l), constructed and arranged to operate substantially as and for the purpose specified.

3. In combination with the clevis L M, constructed substantially as described, whiiiietree-loop P, bolts H H', and coupling G G', the bolt I, and washers K, substantially as and for the purpose set forth.

To the above specification of my invention, I have hereunto Signed my hand, this 29th day of May, A.

urEO. WATT.

Witnesses I. DAVENPORT, 1t. A. WILLIAMS. 

